<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        
        .ball {
            margin: auto;
            width: 200px;
            height: 200px;
            background-color: #fcfcfc;

        }

        .ball:hover {
            border-radius: 50%;
            box-shadow: inset 20px 20px 47px #2c2a2a;
            transition: all 1s ease;
        }
        .nav {
            margin: 100px auto;
            display: flex;
            width: 1200px;
            height: 50px;
            /* background-color:rebeccapurple; */
            justify-content: space-around;
            border-top: #ff8400 solid 4px;
            border-bottom: rgb(206, 202, 202) solid 2px;
        }
        a {
            text-decoration: none;
            color: black;
            line-height: 50px;
        }
        .nav a {
            width: 200px;
            text-align: center;
        }
        .nav a:hover {
            background-color: gainsboro;
        }
    </style>
</head>

<body>
    <div class="ball">

    </div>

    <div class="nav">
        <a href="#">首页</a>
        <a href="#">手机新浪网</a>
        <a href="#">移动客户端</a>
        <a href="#">博客</a>
        <a href="#">微博</a>
        <a href="#">关注我</a>
        
    </div>
</body>

</html>